Nonlinear Transfer Characteristics of Air Spring Struts with High-Fidelity Quarter-Car Tests and Theoretical Modeling

Wei, Yintao; Wu, Mingyu; Tang, Zhuo; Yang, Liunan; Lv, Jingcheng

doi:10.1007/s42417-022-00714-6

Cited by 3 publications

(2 citation statements)

References 12 publications

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“…Perancangan sistem suspensi kendaraan sangat menentukan tingkat kenyamanan yang dirasakan penumpang dan juga memberikan efek kestabilan kendaraan. Efek lebih jauh berdampak pada kesehatan dan keselamatan penumpang [1].…”

Section: Pendahuluanunclassified

Performansi Alat Uji Getaran Kendaraan Model Satu Roda Terhadap Pengaruh Gelombang Jalan

Pipit Wahyu Nugroho,

Utsman Syah Amrullah,

Khambali

et al. 2024

Jtia

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Kenyamanan penumpang kendaraan beserta kestabilan dalam mengendarainya adalah salah satu variabel penting yang selalu diinginkan oleh setiap orang yang menggunakan alat transportasi. Guna mencapai tujuan tersebut, maka bagian suspensi kendaraan akan memegang peranan penting karena fungsinya yang mengisolasi penumpang dari pengaruh eksitasi dari luar kendaraan dan mengatur kestabilan kendaraan agar roda tetap menempel di permukaan jalan. Performansi setiap suspensi sangat perlu untuk diuji sehingga bisa dianalisis kondisinya serta jika dimungkinkan untuk dikembangkan suatu suspensi yang lebih baik unjuk kerjanya. Dalam penelitian ini dirancang model alat uji getaran kendaraan satu roda yang dipakai untuk menguji kenyamanan dan kestabilan kendaraan. Perancangan diawali dari komponen transmisi penggerak dari motor ke komponen profil jalan, dalam hal dimensi, bentuk dan material penyusunnya. Komponen permukaan jalan ini berupa motor, camshaft, connecting rod, plat permukaan jalan, poros pendukung dan roda. Setiap komponen itu dirakit menjadi satu kesatuan sistem alat uji dan akan disimulasikan pergerakannya. Perancangan ini berbasis pada Computer Aided Design dengan perangkat lunak Catia. Pengujian model kendaraan dilakukan secara simulasi dengan gaya eksitasi berupa gelombang sinusoidal dan fungsi step dengan variasi jenis suspensi, baik yang soft, medium dan hard. Hasil pengujian menunjukkan respon yang bagus. Suspensi jenis Soft dan Medium bisa menangani getaran dengan sangat baik terutama dari tingkat kecepatan responnya untuk jalan yang relatif rata. Sementara itu Suspensi jenis Hard sangat baik meredam getaran untuk jalan yang bergelombang.

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Section: Pendahuluanunclassified

Performansi Alat Uji Getaran Kendaraan Model Satu Roda Terhadap Pengaruh Gelombang Jalan

Pipit Wahyu Nugroho,

Utsman Syah Amrullah,

Khambali

et al. 2024

Jtia

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“…In addition, the radius R, the width of the rigid sky a, the central angle corresponding to the rigid sky, and the initial internal air pressure p0 can adjust the vertica stiffness of the pontoon to avoid the resonance region of the system and limit the vertica motion amplitude of the main cabin [33]. Even after determining the geometric size of th flexible inflatable pontoon, the stiffness magnitude can still be artificially varied b adjusting the internal air pressure p0, as shown in Figure 12, thereby actively adjusting th wind and wave resistance of the entire vessel to improve the range of sea conditions t which the vessel can adapt [34]. experimental results of force-displacement.…”

Section: Experimental Verification Of the Dynamic Properties Of Flexi...mentioning

confidence: 99%

Research on High-Speed Catamaran Motion Reduction with Semi-Active Control of Flexible Pontoon

Li,

et al. 2023

JMSE

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A high-speed catamaran with a suspension system and flexible pontoons to reduce motion is proposed, and the vertical motion characteristics of the vessel are investigated. The results demonstrate that altering the stiffness of the flexible pontoon can significantly alter the motion characteristics of a high-speed vessel when subjected to wave excitation. The maximum relative error between the theoretical and experimental values of the vertical dynamic characteristics of the flexible pontoon, considered as a gas spring, is 10.5%. The vertical force exerted by the pontoon exhibits nonlinear behavior in response to compression, yet displays approximately linear behavior within its primary operational range. The design of the Linear Quadratic Regulator controller, utilizing genetic algorithm optimization, avoids the issue of subjectively setting weight coefficients typically found in traditional control systems. This approach achieves the objective of determining the optimal feedback matrix within specified constraints. Simulation results illustrate that the LQR controller developed using genetic algorithm significantly enhance the semi-active suspension performance compared to the passive suspension system. The Root Mean Square value of the main cabin acceleration is reduced by 85.82%, simultaneously reducing the RMS value of the suspension dynamic travel by 85.03% and the RMS value of the pontoon dynamic displacement by 24.42%. These outcomes thoroughly substantiate the effective reduction in vertical motion, effectively attenuating the motion of high-speed vessels under wave excitation.

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Study on Static Stiffness of Flexible Inflatable Pontoon of Wave-Adaptive Rescue Vessel

Jiong,

Zheng,

Yong-Kang

et al. 2023

2023 9th International Conference on Fluid Power and Mechatronics (FPM)

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Nonlinear Transfer Characteristics of Air Spring Struts with High-Fidelity Quarter-Car Tests and Theoretical Modeling

Cited by 3 publications

References 12 publications

Performansi Alat Uji Getaran Kendaraan Model Satu Roda Terhadap Pengaruh Gelombang Jalan

Performansi Alat Uji Getaran Kendaraan Model Satu Roda Terhadap Pengaruh Gelombang Jalan

Research on High-Speed Catamaran Motion Reduction with Semi-Active Control of Flexible Pontoon

Study on Static Stiffness of Flexible Inflatable Pontoon of Wave-Adaptive Rescue Vessel

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